Akai CFTD2011 Service Manual - Page 6

Check U26,U27 power supply

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TROUBLE SHOOTING FLOW CHART (2) TV No Sound Check or change U7,U18 Back to default setting Other Source CheckU18dcheck U26,U27 output Check Main Board and wire connecting R or L no sound all source one port all source Check Main Board dwiredU26,U27 output Check U7 Check Speaker connecting Check U7,U26,U27 Check Speaker connecting Check U7,U26,U27 Audio Issue Noise Check Speaker one port Check U7,U26,U27 Check signal input source Sound low all source TV Check U7,U26,U27 Check U26,U27 power supply check signal source Back to default setting Check U7,U26,U27 4

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4
T
R
O
U
B
L
E
S
H
O
O
T
I
N
G
F
L
O
W
C
H
A
R
T
(
2
)
TV
Check or change
U7,U18
No Sound
Back to default setting
Other Source
CheckU18
，
check U26,U27 output
Check Main Board and wire connecting
all source
Check Main Board
，
wire
，
U26,U27 output
R or L no sound
Check U7
Check Speaker connecting
one port
Check U7,U26,U27
Check Speaker connecting
all source
Check U7,U26,U27
Audio Issue
Noise
Check Speaker
one port
Check U7,U26,U27
Check signal input source
all source
Check U7,U26,U27
Sound low
Check U26,U27 power supply
TV
check signal source
Back to default setting
Check U7,U26,U27